結果
問題 | No.921 ずんだアロー |
ユーザー | McGregorsh |
提出日時 | 2022-07-06 09:19:14 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,054 bytes |
コンパイル時間 | 200 ms |
コンパイル使用メモリ | 82,300 KB |
実行使用メモリ | 103,904 KB |
最終ジャッジ日時 | 2024-06-01 03:15:29 |
合計ジャッジ時間 | 5,633 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 126 ms
83,640 KB |
testcase_01 | AC | 126 ms
83,244 KB |
testcase_02 | AC | 127 ms
83,508 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | AC | 124 ms
83,520 KB |
testcase_07 | AC | 124 ms
83,492 KB |
testcase_08 | AC | 126 ms
83,412 KB |
testcase_09 | AC | 124 ms
83,584 KB |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | AC | 143 ms
89,376 KB |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | AC | 151 ms
94,592 KB |
testcase_16 | AC | 144 ms
89,824 KB |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | AC | 160 ms
103,788 KB |
testcase_24 | WA | - |
ソースコード
import sys, re from math import ceil, floor, sqrt, pi, factorial, gcd from copy import deepcopy from collections import Counter, deque, defaultdict from heapq import heapify, heappop, heappush from itertools import accumulate, product, combinations, combinations_with_replacement, permutations from bisect import bisect, bisect_left, bisect_right from functools import reduce from decimal import Decimal, getcontext def i_input(): return int(input()) def i_map(): return map(int, input().split()) def i_list(): return list(i_map()) def i_row(N): return [i_input() for _ in range(N)] def i_row_list(N): return [i_list() for _ in range(N)] def s_input(): return input() def s_map(): return input().split() def s_list(): return list(s_map()) def s_row(N): return [s_input for _ in range(N)] def s_row_str(N): return [s_list() for _ in range(N)] def s_row_list(N): return [list(s_input()) for _ in range(N)] def lcm(a, b): return a * b // gcd(a, b) def get_distance(x1, y1, x2, y2): d = sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2) return d def rotate(table): n_fild = [] for x in zip(*table[::-1]): n_fild.append(x) return n_fild sys.setrecursionlimit(10 ** 7) INF = float('inf') MOD = 10 ** 9 + 7 MOD2 = 998244353 ###関数コピーしたか?### def main(): n = int(input()) a = i_list() juge = [False] * n for i in range(n-1): if a[i] == a[i+1]: juge[i] = True juge[i+1] = True nums = [] left = 0 right = 0 cou = 0 for i in range(n): if juge[i] == False and cou == 0: left = i cou += 1 if juge[i] and cou == 1: right = i-1 cou = 0 nums.append([left, right]) if len(nums) == 0: if n % 2 == 1: print(n // 2 + 1) exit() else: print(n // 2) exit() #print(nums) ans = sum(juge) for i in range(len(nums)): score = max(0, (nums[i][1] - nums[i][0] + 1) - 2) ans += score // 2 print(ans) if __name__ == '__main__': main()